Elbit Systems announced on Sunday that the US Department of Homeland Security Customs and Border Protection (CBP) had awarded its subsidiary a $145 million contract to deploy border surveillance technology in southern Arizona, Reuters reported.

But according to Bloomberg analyst Brian Friel, quoted by Israeli newspaper Haaretz, the one-year contract could expand to a broader $1 billion deal if the US Congress passes stringent immigration legislation.

Elbit Systems is set to install watch towers along the border with sensors for spotting, tracking, and classifying data, along with command and control centers.

Republican Senator John McCain of Arizona hailed the deal as a “step in the right direction.”

"Arizonans have been waiting more than a decade for the Department of Homeland Security to place the needed technology along our border to support the Border Patrol and fully secure our southern border," he said in a statement.

"If this technology is developed, integrated and fielded correctly, these Integrated Fixed Towers in southern Arizona, coupled with the tremendous work of the Border Patrol, will give our agents the ability to detect, evaluate, and respond to all illegal entries crossing our border."

A government contractor said the choice of an Israeli firm was justified by of its “advanced” experience in maintaining separation barriers.

“It is odd to go offshore for this work, but in extraordinary circumstances, one really wants to employ the best,” Haaretz quoted Mark Amtower, a partner at Amtower & Co, as saying.

The company is also responsible for surveillance technology along the apartheid wall erected by Israel within the West Bank. Only 15 percent of the separation barrier is built along the so-called 1949 Green Line, which is recognized by the international community as the border of Israel proper, UN figures show, with most of it jutting into the occupied West Bank.

The 440-kilometer long barrier is considered illegal under international law.

Among its many international contracts, Elbit contributed in 2013 to a$40 million expansive Internet surveillance program for the Nigerian government.

Elbit Systems has officially pledged on its website to “contribute to the enhancement of quality of life and the environment of the communities in which we live and work.”

But this contribution mainly consists of supporting Israeli occupation forces through the “Adopt a Combat Unit” program.

“Because Elbit Systems is knowingly participating in and aiding Israeli war crimes and Israeli occupation of the Palestinian people, investors in and partners of the security firm are, by extension, accessories to Israel’s many violations of international law and human rights standards.”